Update Package.swift

Author: austintatiousness

Package.swift

@@ -10,6 +10,10 @@ let package = Package(
         .executable(
             name: "WebAPIKitDemo",
             targets: ["WebAPIKitDemo"]
+        ),
+         .library(
+            name: "ECMAScript",
+            targets: ["ECMAScript"]
         ),
         .library(
             name: "WebAPIBase",
@@ -136,4 +140,4 @@ let package = Package(
             dependencies: ["DOM"]
         ),
     ]
-)
+)